Jargon Buster - D

Confused by DIY terms? We’ve got you covered from A-Z with our Jargon Buster!

De-scaling

Process that is used to remove limescale (calcium carbonate) from heat exchanger waterways.

Diaphragm

A device using differential pressures to operate or function . Common applications in a boiler are the diverter valve and air pressure switch.

Digital Programmer

A digital programmer has an electronic display, but does the same job as the time clock. It may have separate controls for the heating and hot water.

Double radiators

A radiator with two heating panels.

Drain the system

Term used when water from a central heating system is to be purposefully emptied.

Draincock

A device to drain a system.

Ducted warm-air system (AGS)

A system using ducting to distribute the heating air.

Ducting

Enclosure designed to accommodate water pipes and fittings, electrical cables and other services.

 

Read our disclaimer